Iowa Department of Transportation
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Doing Business with the Iowa DOT


Purchasing and Selling

Purchasing and Selling

Consultant Resources

Consultant Resources

Contractor Resources

Contractor Resources


  • Property Sales
  • Selling to the DOT: What we buy and how to do business with us
  • Used Vehicle and Equipment Auctions
  • Vendor Application Form




  • Subscribe to Designer Mailing Lists
  • Electronic Plan Specifications
  • Electronic Plan Transfer Instructions
  • Professional and Technical Consultant Utilization
    • Open Requests for Proposals
    • Prequalification for Iowa DOT work
    • Outsourcing Policies and Procedures
  • Office of Design
  • Office of Design Consultant Coordination (Contracts & Specifications)
  • Office of Design Methods Information (Standards & Manuals)

  • Office of Bridges & Structures
  • Office of Bridges & Structures Methods Information (Standards & Manuals)
  • Office of Bridges & Structures (Bridge Aesthetics)

  • Office of Right of Way



  • Bid Letting Information: Pre-letting and post-letting information (Bid Express®)
  • Contractor Cap and Hammer Database
  • Contractor Evaluation Program
  • Disadvantaged Business Enterprise (DBE) Program
  • Letting Process
  • Training & Certification, Materials


Other Resources


  • Specifications for Highway and Bridge Construction
  • Frequently Requested Forms
  • Electronic Reference Library (ERL)
  • All Systems Permit County and City Route Maps
  • Iowa Road Signs

Local Governments


  • Office of Local Systems
  • Bid Thresholds for Cities and Counties
  • Instructional Memorandums to Local Public Agencies
  • Federal-aid Project Development Guide
Iowa Department of Transportation
Policies and Statements | Applets and Plug-ins
Iowa Department of Transportation - 800 Lincoln Way - Ames, IA 50010